998427 has 8 divisors (see below), whose sum is σ = 1409616. Its totient is φ = 626432.

The previous prime is 998423. The next prime is 998429. The reversal of 998427 is 724899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 998427 - 2² = 998423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9738 + ... + 9839.

It is an arithmetic number, because the mean of its divisors is an integer number (176202).

2⁹⁹⁸⁴²⁷ is an apocalyptic number.

998427 is a deficient number, since it is larger than the sum of its proper divisors (411189).

998427 is a wasteful number, since it uses less digits than its factorization.

998427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19597.

The product of its digits is 36288, while the sum is 39.

The square root of 998427 is about 999.2131904654. The cubic root of 998427 is about 99.9475391501.

It can be divided in two parts, 9984 and 27, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 998427 in words is "nine hundred ninety-eight thousand, four hundred twenty-seven".